Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65226
Type: Artigo de periódico
Title: Electroluminescence of (styrene-co-acrylic acid) ionomer/conjugated MEH-PPV blends
Author: Cossiello, RF
Cirpan, A
Karasz, FE
Akcelrud, L
Atvars, TDZ
Abstract: This work reports the electroluminescence of poly[2-methoxy-5(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) and poly(styrene-co-acrylic acid-co-1-pyrenylmethyl methacrylate) (SAA) blends in ratios from 0 to 100 wt.% in mass of MEH-PPV. The styrene-co-acrylic copolymer was synthesized with 3 mol% of acrylic acid units to simultaneously enhance blend miscibility and charge transport in MEH-PPV. The morphology was studied using epifluorescence microscopy and scanning electron microscopy in which the pyrenyl-labeled copolymer is used to enhance microscopic contrast. Device performances were compared: those using MEH-PPV have a turn-on voltage of 3.5 V, luminance of 500 cd/m(2) and current density of 430mA/cm(2) at 5 V, while MEH-PPV blended with 50 wt.% styrene-acrylic copolymer showed a turn-on voltage of 2.5 V, a luminance of 2300 cd/A and a current density of 640 mA/cm(2) at 5 V (C) 2008 Elsevier B.V. All rights reserved.
Subject: MEH-PPV
electroluminescence
polymer blend
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.synthmet.2008.01.011
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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